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refactor: move sixel parser/builder to own file
This commit is contained in:
Wez Furlong
parent
5b0edfddea
commit
15cd990e33
@ -1,25 +1,17 @@
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#![allow(clippy::many_single_char_names)]
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use crate::color::RgbColor;
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use crate::escape::{
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Action, DeviceControlMode, EnterDeviceControlMode, Esc, OperatingSystemCommand,
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ShortDeviceControl, Sixel, SixelData, CSI,
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ShortDeviceControl, CSI,
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};
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use crate::tmux_cc::Event;
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use log::error;
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use num_traits::FromPrimitive;
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use regex::bytes::Regex;
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use std::borrow::BorrowMut;
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use std::cell::RefCell;
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use vtparse::{CsiParam, VTActor, VTParser};
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struct SixelBuilder {
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sixel: Sixel,
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buf: Vec<u8>,
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repeat_re: Regex,
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raster_re: Regex,
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colordef_re: Regex,
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coloruse_re: Regex,
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}
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mod sixel;
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use sixel::SixelBuilder;
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#[derive(Default)]
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struct GetTcapBuilder {
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@ -341,195 +333,11 @@ impl<'a, F: FnMut(Action)> VTActor for Performer<'a, F> {
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}
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}
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impl SixelBuilder {
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fn new(params: &[i64]) -> Self {
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let pan = match params.get(0).unwrap_or(&0) {
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7 | 8 | 9 => 1,
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0 | 1 | 5 | 6 => 2,
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3 | 4 => 3,
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2 => 5,
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_ => 2,
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};
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let background_is_transparent = match params.get(1).unwrap_or(&0) {
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1 => true,
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_ => false,
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};
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let horizontal_grid_size = params.get(2).map(|&x| x);
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let repeat_re = Regex::new("^!(\\d+)([\x3f-\x7e])").unwrap();
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let raster_re = Regex::new("^\"(\\d+);(\\d+)(;(\\d+))?(;(\\d+))?").unwrap();
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let colordef_re = Regex::new("^#(\\d+);(\\d+);(\\d+);(\\d+);(\\d+);?").unwrap();
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let coloruse_re = Regex::new("^#(\\d+)([^;\\d]|$)").unwrap();
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Self {
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sixel: Sixel {
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pan,
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pad: 1,
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pixel_width: None,
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pixel_height: None,
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background_is_transparent,
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horizontal_grid_size,
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data: vec![],
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},
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buf: vec![],
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repeat_re,
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raster_re,
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colordef_re,
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coloruse_re,
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}
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}
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fn push(&mut self, data: u8) {
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self.buf.push(data);
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}
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fn finish(&mut self) {
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fn cap_int<T: std::str::FromStr>(m: regex::bytes::Match) -> Option<T> {
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let bytes = m.as_bytes();
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// Safe because we matched digits from the regex
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let s = unsafe { std::str::from_utf8_unchecked(bytes) };
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s.parse::<T>().ok()
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}
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let mut remainder = &self.buf[..];
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while !remainder.is_empty() {
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let data = remainder[0];
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if data == b'$' {
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self.sixel.data.push(SixelData::CarriageReturn);
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remainder = &remainder[1..];
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continue;
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}
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if data == b'-' {
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self.sixel.data.push(SixelData::NewLine);
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remainder = &remainder[1..];
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continue;
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}
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if data >= 0x3f && data <= 0x7e {
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self.sixel.data.push(SixelData::Data(data - 0x3f));
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remainder = &remainder[1..];
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continue;
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}
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if let Some(c) = self.raster_re.captures(remainder) {
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let all = c.get(0).unwrap();
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let matched_len = all.as_bytes().len();
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let pan = cap_int(c.get(1).unwrap()).unwrap_or(2);
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let pad = cap_int(c.get(2).unwrap()).unwrap_or(1);
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let pixel_width = c.get(4).and_then(cap_int);
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let pixel_height = c.get(6).and_then(cap_int);
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self.sixel.pan = pan;
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self.sixel.pad = pad;
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self.sixel.pixel_width = pixel_width;
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self.sixel.pixel_height = pixel_height;
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if let (Some(w), Some(h)) = (pixel_width, pixel_height) {
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let size = w as usize * h as usize;
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// Ideally we'd just use `try_reserve` here, but that is
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// nightly Rust only at the time of writing this comment:
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// <https://github.com/rust-lang/rust/issues/48043>
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const MAX_SIXEL_SIZE: usize = 100_000_000;
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if size > MAX_SIXEL_SIZE {
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log::error!(
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"Ignoring sixel data {}x{} because {} bytes > max allowed {}",
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w,
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h,
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size,
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MAX_SIXEL_SIZE
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);
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self.sixel.pixel_width = None;
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self.sixel.pixel_height = None;
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self.sixel.data.clear();
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return;
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}
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self.sixel.data.reserve(size);
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}
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remainder = &remainder[matched_len..];
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continue;
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}
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if let Some(c) = self.coloruse_re.captures(remainder) {
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let all = c.get(0).unwrap();
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let matched_len = all.as_bytes().len();
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let color_number = cap_int(c.get(1).unwrap()).unwrap_or(0);
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self.sixel
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.data
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.push(SixelData::SelectColorMapEntry(color_number));
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let pop_len = matched_len - c.get(2).unwrap().as_bytes().len();
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remainder = &remainder[pop_len..];
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continue;
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}
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if let Some(c) = self.colordef_re.captures(remainder) {
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let all = c.get(0).unwrap();
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let matched_len = all.as_bytes().len();
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let color_number = cap_int(c.get(1).unwrap()).unwrap_or(0);
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let system = cap_int(c.get(2).unwrap()).unwrap_or(1);
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let a = cap_int(c.get(3).unwrap()).unwrap_or(0);
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let b = cap_int(c.get(4).unwrap()).unwrap_or(0);
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let c = cap_int(c.get(5).unwrap()).unwrap_or(0);
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if system == 1 {
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self.sixel.data.push(SixelData::DefineColorMapHSL {
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color_number,
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hue_angle: a,
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lightness: b,
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saturation: c,
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});
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} else {
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let r = a as f32 * 255.0 / 100.;
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let g = b as f32 * 255.0 / 100.;
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let b = c as f32 * 255.0 / 100.;
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let rgb = RgbColor::new_8bpc(r as u8, g as u8, b as u8); // FIXME: from linear
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self.sixel
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.data
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.push(SixelData::DefineColorMapRGB { color_number, rgb });
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}
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remainder = &remainder[matched_len..];
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continue;
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}
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if let Some(c) = self.repeat_re.captures(remainder) {
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let all = c.get(0).unwrap();
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let matched_len = all.as_bytes().len();
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let repeat_count = cap_int(c.get(1).unwrap()).unwrap_or(1);
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let data = c.get(2).unwrap().as_bytes()[0] - 0x3f;
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self.sixel
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.data
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.push(SixelData::Repeat { repeat_count, data });
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remainder = &remainder[matched_len..];
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continue;
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}
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log::error!(
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"finished sixel parse with {} bytes pending {:?}",
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remainder.len(),
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std::str::from_utf8(&remainder[0..24.min(remainder.len())])
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);
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break;
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}
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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use crate::cell::{Intensity, Underline};
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use crate::color::ColorSpec;
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use crate::color::{ColorSpec, RgbColor};
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use crate::escape::csi::{
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CharacterPath, DecPrivateMode, DecPrivateModeCode, Device, Mode, Sgr, Window, XtSmGraphics,
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XtSmGraphicsItem, XtermKeyModifierResource,
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@ -703,116 +511,6 @@ mod test {
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assert_eq!(encode(&actions), "\x1b%H");
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}
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#[test]
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fn sixel() {
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let mut p = Parser::new();
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let actions = p.parse_as_vec(b"\x1bP1;2;3;q@\x1b\\");
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assert_eq!(
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vec![
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Action::Sixel(Box::new(Sixel {
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pan: 2,
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pad: 1,
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pixel_width: None,
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pixel_height: None,
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background_is_transparent: false,
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horizontal_grid_size: Some(3),
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data: vec![SixelData::Data(1)]
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})),
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Action::Esc(Esc::Code(EscCode::StringTerminator)),
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],
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actions
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);
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assert_eq!(format!("{}", actions[0]), "\x1bP0;0;3q@");
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// This is the "HI" example from wikipedia
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let mut p = Parser::new();
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let actions = p.parse_as_vec(
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b"\x1bPq\
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#0;2;0;0;0#1;2;100;100;0#2;2;0;100;0\
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#1~~@@vv@@~~@@~~$\
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#2??}}GG}}??}}??-\
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#1!14@\
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\x1b\\",
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);
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assert_eq!(
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format!("{}", actions[0]),
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"\x1bP0;0q\
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#0;2;0;0;0#1;2;100;100;0#2;2;0;100;0\
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#1~~@@vv@@~~@@~~$\
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#2??}}GG}}??}}??-\
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#1!14@"
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);
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use SixelData::*;
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assert_eq!(
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vec![
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Action::Sixel(Box::new(Sixel {
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pan: 2,
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pad: 1,
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pixel_width: None,
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pixel_height: None,
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background_is_transparent: false,
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horizontal_grid_size: None,
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data: vec![
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DefineColorMapRGB {
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color_number: 0,
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rgb: RgbColor::new_8bpc(0, 0, 0)
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},
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DefineColorMapRGB {
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color_number: 1,
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rgb: RgbColor::new_8bpc(255, 255, 0)
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},
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DefineColorMapRGB {
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color_number: 2,
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rgb: RgbColor::new_8bpc(0, 255, 0)
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},
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SelectColorMapEntry(1),
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Data(63),
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Data(63),
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Data(1),
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Data(1),
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Data(55),
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Data(55),
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Data(1),
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Data(1),
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Data(63),
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Data(63),
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Data(1),
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Data(1),
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Data(63),
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Data(63),
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CarriageReturn,
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SelectColorMapEntry(2),
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Data(0),
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Data(0),
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Data(62),
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Data(62),
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Data(8),
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Data(8),
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Data(62),
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Data(62),
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Data(0),
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Data(0),
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Data(62),
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Data(62),
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Data(0),
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Data(0),
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NewLine,
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SelectColorMapEntry(1),
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Repeat {
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repeat_count: 14,
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data: 1
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}
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]
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})),
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Action::Esc(Esc::Code(EscCode::StringTerminator)),
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],
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actions
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);
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}
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#[test]
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fn soft_reset() {
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let mut p = Parser::new();
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314
termwiz/src/escape/parser/sixel.rs
Normal file
314
termwiz/src/escape/parser/sixel.rs
Normal file
@ -0,0 +1,314 @@
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use crate::color::RgbColor;
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use crate::escape::{Sixel, SixelData};
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use regex::bytes::Regex;
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pub struct SixelBuilder {
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pub sixel: Sixel,
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buf: Vec<u8>,
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repeat_re: Regex,
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raster_re: Regex,
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colordef_re: Regex,
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coloruse_re: Regex,
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}
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impl SixelBuilder {
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pub fn new(params: &[i64]) -> Self {
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let pan = match params.get(0).unwrap_or(&0) {
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7 | 8 | 9 => 1,
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0 | 1 | 5 | 6 => 2,
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3 | 4 => 3,
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2 => 5,
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_ => 2,
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};
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let background_is_transparent = match params.get(1).unwrap_or(&0) {
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1 => true,
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_ => false,
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};
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let horizontal_grid_size = params.get(2).map(|&x| x);
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let repeat_re = Regex::new("^!(\\d+)([\x3f-\x7e])").unwrap();
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let raster_re = Regex::new("^\"(\\d+);(\\d+)(;(\\d+))?(;(\\d+))?").unwrap();
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let colordef_re = Regex::new("^#(\\d+);(\\d+);(\\d+);(\\d+);(\\d+);?").unwrap();
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let coloruse_re = Regex::new("^#(\\d+)([^;\\d]|$)").unwrap();
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Self {
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sixel: Sixel {
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pan,
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pad: 1,
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pixel_width: None,
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pixel_height: None,
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background_is_transparent,
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horizontal_grid_size,
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data: vec![],
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},
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buf: vec![],
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repeat_re,
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raster_re,
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colordef_re,
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coloruse_re,
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}
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}
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pub fn push(&mut self, data: u8) {
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self.buf.push(data);
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}
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pub fn finish(&mut self) {
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fn cap_int<T: std::str::FromStr>(m: regex::bytes::Match) -> Option<T> {
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let bytes = m.as_bytes();
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// Safe because we matched digits from the regex
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let s = unsafe { std::str::from_utf8_unchecked(bytes) };
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s.parse::<T>().ok()
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}
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let mut remainder = &self.buf[..];
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while !remainder.is_empty() {
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let data = remainder[0];
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if data == b'$' {
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self.sixel.data.push(SixelData::CarriageReturn);
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remainder = &remainder[1..];
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continue;
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}
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if data == b'-' {
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self.sixel.data.push(SixelData::NewLine);
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remainder = &remainder[1..];
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continue;
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}
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if data >= 0x3f && data <= 0x7e {
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self.sixel.data.push(SixelData::Data(data - 0x3f));
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remainder = &remainder[1..];
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continue;
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}
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if let Some(c) = self.raster_re.captures(remainder) {
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let all = c.get(0).unwrap();
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let matched_len = all.as_bytes().len();
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let pan = cap_int(c.get(1).unwrap()).unwrap_or(2);
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let pad = cap_int(c.get(2).unwrap()).unwrap_or(1);
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let pixel_width = c.get(4).and_then(cap_int);
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let pixel_height = c.get(6).and_then(cap_int);
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self.sixel.pan = pan;
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self.sixel.pad = pad;
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self.sixel.pixel_width = pixel_width;
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self.sixel.pixel_height = pixel_height;
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if let (Some(w), Some(h)) = (pixel_width, pixel_height) {
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let size = w as usize * h as usize;
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// Ideally we'd just use `try_reserve` here, but that is
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// nightly Rust only at the time of writing this comment:
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// <https://github.com/rust-lang/rust/issues/48043>
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const MAX_SIXEL_SIZE: usize = 100_000_000;
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if size > MAX_SIXEL_SIZE {
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log::error!(
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"Ignoring sixel data {}x{} because {} bytes > max allowed {}",
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w,
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h,
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size,
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MAX_SIXEL_SIZE
|
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);
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self.sixel.pixel_width = None;
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self.sixel.pixel_height = None;
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self.sixel.data.clear();
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return;
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}
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self.sixel.data.reserve(size);
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}
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remainder = &remainder[matched_len..];
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continue;
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}
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if let Some(c) = self.coloruse_re.captures(remainder) {
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let all = c.get(0).unwrap();
|
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let matched_len = all.as_bytes().len();
|
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|
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let color_number = cap_int(c.get(1).unwrap()).unwrap_or(0);
|
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|
||||
self.sixel
|
||||
.data
|
||||
.push(SixelData::SelectColorMapEntry(color_number));
|
||||
|
||||
let pop_len = matched_len - c.get(2).unwrap().as_bytes().len();
|
||||
|
||||
remainder = &remainder[pop_len..];
|
||||
continue;
|
||||
}
|
||||
|
||||
if let Some(c) = self.colordef_re.captures(remainder) {
|
||||
let all = c.get(0).unwrap();
|
||||
let matched_len = all.as_bytes().len();
|
||||
|
||||
let color_number = cap_int(c.get(1).unwrap()).unwrap_or(0);
|
||||
let system = cap_int(c.get(2).unwrap()).unwrap_or(1);
|
||||
let a = cap_int(c.get(3).unwrap()).unwrap_or(0);
|
||||
let b = cap_int(c.get(4).unwrap()).unwrap_or(0);
|
||||
let c = cap_int(c.get(5).unwrap()).unwrap_or(0);
|
||||
|
||||
if system == 1 {
|
||||
self.sixel.data.push(SixelData::DefineColorMapHSL {
|
||||
color_number,
|
||||
hue_angle: a,
|
||||
lightness: b,
|
||||
saturation: c,
|
||||
});
|
||||
} else {
|
||||
let r = a as f32 * 255.0 / 100.;
|
||||
let g = b as f32 * 255.0 / 100.;
|
||||
let b = c as f32 * 255.0 / 100.;
|
||||
let rgb = RgbColor::new_8bpc(r as u8, g as u8, b as u8); // FIXME: from linear
|
||||
self.sixel
|
||||
.data
|
||||
.push(SixelData::DefineColorMapRGB { color_number, rgb });
|
||||
}
|
||||
|
||||
remainder = &remainder[matched_len..];
|
||||
continue;
|
||||
}
|
||||
|
||||
if let Some(c) = self.repeat_re.captures(remainder) {
|
||||
let all = c.get(0).unwrap();
|
||||
let matched_len = all.as_bytes().len();
|
||||
|
||||
let repeat_count = cap_int(c.get(1).unwrap()).unwrap_or(1);
|
||||
let data = c.get(2).unwrap().as_bytes()[0] - 0x3f;
|
||||
self.sixel
|
||||
.data
|
||||
.push(SixelData::Repeat { repeat_count, data });
|
||||
remainder = &remainder[matched_len..];
|
||||
continue;
|
||||
}
|
||||
|
||||
log::error!(
|
||||
"finished sixel parse with {} bytes pending {:?}",
|
||||
remainder.len(),
|
||||
std::str::from_utf8(&remainder[0..24.min(remainder.len())])
|
||||
);
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod test {
|
||||
use super::*;
|
||||
use crate::escape::parser::Parser;
|
||||
use crate::escape::{Action, Esc, EscCode};
|
||||
use pretty_assertions::assert_eq;
|
||||
|
||||
#[test]
|
||||
fn sixel() {
|
||||
let mut p = Parser::new();
|
||||
let actions = p.parse_as_vec(b"\x1bP1;2;3;q@\x1b\\");
|
||||
assert_eq!(
|
||||
vec![
|
||||
Action::Sixel(Box::new(Sixel {
|
||||
pan: 2,
|
||||
pad: 1,
|
||||
pixel_width: None,
|
||||
pixel_height: None,
|
||||
background_is_transparent: false,
|
||||
horizontal_grid_size: Some(3),
|
||||
data: vec![SixelData::Data(1)]
|
||||
})),
|
||||
Action::Esc(Esc::Code(EscCode::StringTerminator)),
|
||||
],
|
||||
actions
|
||||
);
|
||||
|
||||
assert_eq!(format!("{}", actions[0]), "\x1bP0;0;3q@");
|
||||
|
||||
// This is the "HI" example from wikipedia
|
||||
let mut p = Parser::new();
|
||||
let actions = p.parse_as_vec(
|
||||
b"\x1bPq\
|
||||
#0;2;0;0;0#1;2;100;100;0#2;2;0;100;0\
|
||||
#1~~@@vv@@~~@@~~$\
|
||||
#2??}}GG}}??}}??-\
|
||||
#1!14@\
|
||||
\x1b\\",
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
format!("{}", actions[0]),
|
||||
"\x1bP0;0q\
|
||||
#0;2;0;0;0#1;2;100;100;0#2;2;0;100;0\
|
||||
#1~~@@vv@@~~@@~~$\
|
||||
#2??}}GG}}??}}??-\
|
||||
#1!14@"
|
||||
);
|
||||
|
||||
use SixelData::*;
|
||||
assert_eq!(
|
||||
vec![
|
||||
Action::Sixel(Box::new(Sixel {
|
||||
pan: 2,
|
||||
pad: 1,
|
||||
pixel_width: None,
|
||||
pixel_height: None,
|
||||
background_is_transparent: false,
|
||||
horizontal_grid_size: None,
|
||||
data: vec![
|
||||
DefineColorMapRGB {
|
||||
color_number: 0,
|
||||
rgb: RgbColor::new_8bpc(0, 0, 0)
|
||||
},
|
||||
DefineColorMapRGB {
|
||||
color_number: 1,
|
||||
rgb: RgbColor::new_8bpc(255, 255, 0)
|
||||
},
|
||||
DefineColorMapRGB {
|
||||
color_number: 2,
|
||||
rgb: RgbColor::new_8bpc(0, 255, 0)
|
||||
},
|
||||
SelectColorMapEntry(1),
|
||||
Data(63),
|
||||
Data(63),
|
||||
Data(1),
|
||||
Data(1),
|
||||
Data(55),
|
||||
Data(55),
|
||||
Data(1),
|
||||
Data(1),
|
||||
Data(63),
|
||||
Data(63),
|
||||
Data(1),
|
||||
Data(1),
|
||||
Data(63),
|
||||
Data(63),
|
||||
CarriageReturn,
|
||||
SelectColorMapEntry(2),
|
||||
Data(0),
|
||||
Data(0),
|
||||
Data(62),
|
||||
Data(62),
|
||||
Data(8),
|
||||
Data(8),
|
||||
Data(62),
|
||||
Data(62),
|
||||
Data(0),
|
||||
Data(0),
|
||||
Data(62),
|
||||
Data(62),
|
||||
Data(0),
|
||||
Data(0),
|
||||
NewLine,
|
||||
SelectColorMapEntry(1),
|
||||
Repeat {
|
||||
repeat_count: 14,
|
||||
data: 1
|
||||
}
|
||||
]
|
||||
})),
|
||||
Action::Esc(Esc::Code(EscCode::StringTerminator)),
|
||||
],
|
||||
actions
|
||||
);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user